ReefPure Trace Element Supplement ReefPure Trace Element Supplement is a highly advanced, carefully formulated proprietary product designed to supply marine and reef aquariums with essential elements for growth and health of captive corals and invertebrates. It is the most comprehensive blend of minor elements ever produced. Detailed research has shown that many minor elements are rapidly depleted by corals and fish. ReefPure Trace Element Supplement replenishes these elements precisely. Unlike competing products, ReefPure Trace Element Supplement will not cause undesirable algae growth when used properly. ReefPure Trace Element Supplement contains Boron, Fluorine, Lithium, Rubidium, Barium, Zinc, Iron, Molybdenum, Selenium, Cobalt, Vanadium and Manganese. These elements are supplied in a balanced ratio utilized by corals and fish. As with all ReefPure products, Trace Element Supplement contains no Ammonia, Phosphate, Silicates, preservatives, chelating agents or dyes. Contains 12 different ACS grade products in a proprietary formula and quantity. It is produced entirely from Analytical Reagent Grade (A.C.S.) and Pharmaceutical Grade (U.S.P.) raw materials, the highest quality raw materials in the hobby. Warner Marine Research is the only manufacturer to use these fine quality raw materials. It is also highly concentrated, making it highly cost effective compared to lower quality competing products. Most importantly Warner Marine Research Trace Element Supplement is highly effective at adding high quality bio-available trace elements without the unnecessary impurities found in the competitors products. Recent studies have shown that these impurities contained in low quality additives may lead to an acute failure of the biological system or commonly referred to as “old tank syndrome”. Water changes are the only method to reverse the negative effect of these toxic impurities and even this may not counter the long term effects of these impurities. We believe that the hobbyist should never be forced to perform water changes specifically to remove impurities added intentionally by the use of low quality additives.